Moringa Oleifera Seed Peel Structure and Its Performance in Cementitious Composite

Ishihara, Marina Keiko; Silva, Guilherme Jorge Brigolini; Quintão, Cristiane Medina Finzi; Novack, Kátia Monteiro

doi:10.1590/1980-5373-mr-2021-0328

Cited by 6 publications

(5 citation statements)

References 14 publications

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“…Fragments of the husks and valves of the moringa fruit, which is a lignite material (Oliveira Tavares et al, 2020), were still visible in the final vermicomposts. Figure 2 suggests the presence of lignin in the parts of moringa fruit, using FT-IR, which was also observed in other studies (Meneghel et al, 2013;Oliveira Tavares et al, 2020;Ishihara et al, 2021). However, the presence of lignin in organic compounds can be highly desirable, since these polymers are essential for the formation of organic matter in the soil, favoring increased soil organic matter content (Nkoa, 2014) and enhancing water absorption (Ishihara et al, 2021).…”

Section: Vermicomposting Stabilization Processsupporting

confidence: 78%

“…The increase in TP was 33; 41; 59; 40, and 39%, respectively, according to the treatments; also, for TK the increase was 37; 69; 91; 82, and 76%, and for TCa: 60; 62; 47; 62, and 42%, following treatments T1, T2, T3, T4, and T5. Studies reveal the abundance of minerals such as calcium in moringa fruit (Ishihara et al, 2021), which represents an alternative for fertilization processes. However, nothing has been reported regarding the use of these materials in stabilization processes with future application in soils.…”

Section: Vermicomposting Stabilization Processmentioning

confidence: 99%

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Sustainable valorization of Moringa oleifera Lam. co-products and zoo waste

Rubio,

Coldebella,

Boroski

et al. 2024

Rev. Bras. Ciênc. Ambient.

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Moringa oleifera (moringa) stands out as a promising plant in several segments, being produced worldwide. However, its co-products, particularly valves and seed husks, which represent more than 70% of its fruit, remain underutilized. Therefore, this work aimed to assess the use of parts of the moringa fruit in conjunction with sediment from an artificial pond in a zoo enclosure inhabited by Tapirus terrestris (tapir), exploring the potential treatment of these wastes, using Eisenia foetidaearthworms. Five experimental conditions were analyzed, whose waste proportions were varied. The vermicomposts were not phytotoxic and differed regarding the C/N ratio; those that received parts of the moringa fruit had a higher C/N ratio. As commonly observed in stabilization processes, the contents of P, K, Ca, and electrical conductivity increased, while carbon and pH decreased during stabilization. Plant development of Catharanthus roseus was evaluated using, in addition to the vermicomposts, two commercial composts. The vermicomposts provided better development of C. roseus than the commercial composts, with T2 (65% sediment+35% fruit valves) and T3 (50% sediment+35% valves+15% seed husks) standing out as the best treatments. Vermicomposting associated with moringa co-products and zoo waste is a viable alternative via aerobic treatment, favoring waste management and the search for sustainability.

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Section: Vermicomposting Stabilization Processsupporting

confidence: 78%

Section: Vermicomposting Stabilization Processmentioning

confidence: 99%

Sustainable valorization of Moringa oleifera Lam. co-products and zoo waste

Rubio,

Coldebella,

Boroski

et al. 2024

Rev. Bras. Ciênc. Ambient.

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“…This is due to the reduced number of voids and compact packing characteristics of AMOFHFC specimens. 32 A peak hardness value of 85 HRRW is observed for AMOFHFC specimen F due to the minimum number of voids and better packing characteristics of composite specimen. Further increase in wt.% of SiC nanofiller particles in AMOFHFC specimen decreased the hardness value by 4.7%.…”

Section: Resultsmentioning

confidence: 94%

Effect of alkali-treated Moringa oleifera fruit husk fibre/SiC nanoparticle reinforced polymer composites

Saravanakumar¹,

Karuppuswamy²,

Binoj

2023

Proceedings of the Institution of Mechanical Engineers, Part E:

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Composite industries use natural fibre as a sustainable resource to improve the sustainability and eco-friendliness of polymer composites. The characterization of alkali-treated Moringa oleifera fruit husk fibres (AMOFHFs) reinforced in unsaturated polyester resin matrix with varying weight percent of nano-sized silicon carbide (SiC) particles as filler material is presented in this paper. The AMOFHFs reinforced composite (AMOFHFC) specimens contain 20 wt.% AMOFHFs and nano-sized SiC particles ranging from 1 to 5 wt.% in 1 wt.% steps. The effect of wt.% variation in nano-sized SiC particles on the mechanical, morphological, tribological and water absorption behaviour of AMOFHFC specimens was thoroughly investigated. According to the findings, the AMOFHFC specimen with 4 wt.% nano-sized SiC particles as filler material has the best mechanical, tribological and water absorption properties. The hardness, tensile, flexural and impact strength of the AMOFHFC specimen with 4 wt.% nano-sized SiC particles improved by 14.86%, 23.11%, 9.6% and 23.22% respectively compared to the composite specimen without SiC nanoparticles as filler material. Similarly, the AMOFHFC specimen with 4 wt.% nano-sized SiC particles exhibited a lesser weight loss of 96.7% compared to the composite specimen without SiC nanoparticles as filler material during the Pin-on-disk experimentation which showcases its superior tribological characteristics. Furthermore, SEM images of fractured tensile AMOFHFC specimens aided in understanding the bonding nature of the AMOFHFs, SiC nanoparticles and unsaturated polyester resin matrix in the composite specimens. The findings above led us to the conclusion that AMOFHFCs with acceptable hydrophobic nature are best suited for light weight automotive and structural applications.

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“…In the FC 1.5 formulation, the transition to the stiffening stage occurred at large displacements (N8 mm). Therefore, the concentration of fiber added to the mixture is important for plasticity performance [62]- [64]. Excess cellulose fiber can restrict the flow of cementitious composites [12], [65].…”

Section: Squeeze-flowmentioning

confidence: 99%

Effect of combined fiber-microcrystalline cellulose reinforcement on the rheology and hydration kinetics of cementitious composites

Bilcati,

Costa,

Tamura

2024

Rev. IBRACON Estrut. Mater.

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The influence of the combined addition of cellulose fibers (FC) and microcrystalline celluloses (MCC) on the fresh properties and hydration kinetics of cementitious composites was investigated. For this purpose, sixteen different formulations of FC-MCC celluloses in the cement matrix were analyzed, in which various cellulose fibers were 0.5%, 1.0%, and 1.5% and microcrystalline cellulose in 0.4%, 0.6% and 0.8% about the cement mass. The cementitious composites with the addition of FC-MCC celluloses were characterized in terms of rheological behavior, which was determined through the Squeeze flow method, fluidity through the mini-slump test, and hydration kinetics determined through the temporal evolution of the temperature of the mixtures. The initial hydration tests showed that the maximum addition of MCC (0.8%) used in this work reduced the maximum temperature of the cementitious composites, as well as the combination of FCs with MCC 0.8. Cellulose fibers took a longer time to reach the maximum temperature. The combined contents of FC 1.0-MCC 0.4 and FC 0.5-MCC 0.6 promoted an increase in the maximum temperature, which could indicate a dispersive effect of the cellulose particles with the cementitious system. The results of the compression flow showed that the studied samples presented a flow with very low loads and extended for a large part of the curve. Te increase in the amount of cellulose fiber alters the main phenomena related to flow: with a high cellulose content (FC 1.5%) there is an increase in friction between the particles, leading to the conclusion that the amount of cellulose fibers in the cementitious system influences on the rheological behavior and the occurrence of phase separation.

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Moringa Oleifera Seed Peel Structure and Its Performance in Cementitious Composite

Cited by 6 publications

References 14 publications

Sustainable valorization of Moringa oleifera Lam. co-products and zoo waste

Sustainable valorization of Moringa oleifera Lam. co-products and zoo waste

Effect of alkali-treated Moringa oleifera fruit husk fibre/SiC nanoparticle reinforced polymer composites

Effect of combined fiber-microcrystalline cellulose reinforcement on the rheology and hydration kinetics of cementitious composites

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